Home >                  	Term: cable-tool drilling  
cable-tool drilling
A method of drilling, now largely replaced by rotary drilling, in which the rock at the bottom of the hole is broken up by a steel bit with a blunt, chisel-shaped cutting edge. The bit is at the bottom of a heavy string of steel tools suspended on a cable that is activated by a walking beam, the bit chipping the rock by regularly repeated blows. The method is adapted to drilling water wells and relatively shallow oil wells.
- Del af tale: noun
 - Branche/domæne: Mining
 - Category: General mining; Mineral mining
 - Government Agency: USBM
 
 			0   			 		
 Ophavsmand
- ed.young
 - 100% positive feedback
 
(Milwaukee, United States)